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Updating the long-term creep strains in concrete containment vessels by using Markov chain Monte Carlo simulation and polynomial chaos expansions

Berveiller, Marc / Le Pape, Yann / Sudret, Bruno / Perrin, Frédéric

The time-dependent loss of prestress of cables in Nuclear Power Plant concrete inner containment buildings may affect the vessel leak-tightness and reduce its life extension. Thus, the assessment of the structural integrity of the containment vessel requires a correct estimation of the long-term creep strains. The article aims at computing and updating the evolution in time of a confidence interval on the creep strains by updating the prior density of input parameters that is specified in a Bayesian framework.

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Updating the long-term creep strains in concrete containment vessels by using Markov chain Monte Carlo simulation and polynomial chaos expansions

Berveiller, Marc / Le Pape, Yann / Sudret, Bruno / Perrin, Frédéric

The time-dependent loss of prestress of cables in Nuclear Power Plant concrete inner containment buildings may affect the vessel leak-tightness and reduce its life extension. Thus, the assessment of the structural integrity of the containment vessel requires a correct estimation of the long-term creep strains. The article aims at computing and updating the evolution in time of a confidence interval on the creep strains by updating the prior density of input parameters that is specified in a Bayesian framework.

Updating the long-term creep strains in concrete containment vessels by using Markov chain Monte Carlo simulation and polynomial chaos expansions

Berveiller, Marc / Le Pape, Yann / Sudret, Bruno / Perrin, Frédéric

The time-dependent loss of prestress of cables in Nuclear Power Plant concrete inner containment buildings may affect the vessel leak-tightness and reduce its life extension. Thus, the assessment of the structural integrity of the containment vessel requires a correct estimation of the long-term creep strains. The article aims at computing and updating the evolution in time of a confidence interval on the creep strains by updating the prior density of input parameters that is specified in a Bayesian framework.

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Title:

Updating the long-term creep strains in concrete containment vessels by using Markov chain Monte Carlo simulation and polynomial chaos expansions

Contributors:

Berveiller, Marc (author) / Le Pape, Yann (author) / Sudret, Bruno (author) / Perrin, Frédéric (author)

Published in:

Structure and Infrastructure Engineering ; 8 ; 425-440

Publication date:

2012-05-01

Size:

16 pages

ISSN:

1573-2479 , 1744-8980

DOI:

https://doi.org/10.1080/15732479.2010.539057

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

Keywords:

concrete containment , creep; polynomial chaos , updating method , MCMC , non-intrusive method

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